Ṭibāq is fundamentally an opposed pair of meanings, whether expressed through nouns, verbs, or another construction.
Muqābalah presents a sequence of two or more meanings and then an ordered corresponding sequence of contrasts. Its figure depends on a broader structure.
ṬibāqMuqābalah
One opposed semantic pairTwo or more coordinated pairs
Opposition is centralOpposition plus ordered correspondence
A passage can contain multiple contrasts without automatically forming an organized muqābalah.